@article{oai:ir.kagoshima-u.ac.jp:00000683,
 author = {竹下, 寿雄 and TAKESHITA, Toshio and 前田, 滋 and MAEDA, Shigeru and 今吉, 盛男 and IMAYOSHI, Morio and 大木, 章 and OHKI, Akira},
 journal = {鹿児島大学工学部研究報告, The research reports of the Faculty of Engineering, Kagoshima University},
 month = {Nov},
 note = {Volcanic ash from Mt. Sakurajima was collected together with rain water monthly from April 1985 to March 1986 at 14 locations in Kagoshima City and 7 locations on Sakurajima. After the samples had been filtered, the residue was dried and weighed, and the filtrate was analyzed for SO_4^{2-}, Cl^- and water-soluble matter. The amounts of sulfur oxides on PbO_2-candle were measured at the same locations as with ashfall measurement (except for 2 locations of Sakurajima). The average monthly ashfall at the 14 locations in Kagoshima City was 525 ton/km^2 and at the 7 locations on Sakurajima was 5,110 ton/km^2. Both values were the largest in those of the last 8 fiscal years (from 1978 to 1985). The largest amount of monthly ashfall in this fiscal year was 77,200 ton/km^2, which was recorded at Kurokami Middle School in September. This value is also the largest one of those recorded during the last 8 fiscal years. The falling weights of SO_4^{2-}, Cl^- and water soluble matter for this year were generally higher than those for the last year. The average amount of sulfur oxides absorbed on the PbO_2-candle on Sakurajima for this fiscal year was also larger than the corresponding average for the last year. The largest amount of the absorbed sulfur oxide was 3.10 mg/100 cm^2day, which was recorded at Arimura Haisuichi in February.},
 pages = {145--164},
 title = {鹿児島市及び桜島の大気汚染(降灰)調査 (第8報) : 昭和60年度調査報告},
 volume = {28},
 year = {1986}
}